DPU works to solve chlorine issue

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By Tris DeRoma

The Department of Public Utilities is not going to name names as to what customer was dumping chlorine into the county’s wastewater stream, but it did tell the Environmental Protection Agency that it does have the problem solved. 

In April, the EPA cited the Department of Public Utilities for having higher than the allowed limits of chlorine in its wastewater stream. 

Glasco also told the EPA that the DPU has eliminated chlorine from going out into the Rio Grande River through its Los Alamos Wastewater Treatment Plant stream, and is in the process of installing equipment that will permanently keep chlorine out of the plant’s stream.

“DPU is in the process of equipping the Los Alamos Wastewater Treatment Plant with a HACH CL17 colorimetric chlorine analyzer to measure chlorine in the effluent and the equipment to inject sulfur dioxide into the effluent before it leaves the plant if there is any detection of chlorine,” Department of Utilities Manager Tim Glasco said. “…Until this de-chlorinization equipment is installed, D-Chlorination (92% active sodium sulfite) tablets are being applied at the end of the treatment process to meet National Pollutant Discharge Elimination System requirements.” 

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